Question

I have an object that looks something like

names = {
  m: [
       'adam',
       'luke',
       'mark',
       'john'
     ],
  f: [
       'lucy',
       'mary',
       'jill',
       'racheal'
     ],
  l: [
       'smith',
       'hancock',
       'williams',
       'browne'
     ]
};

What I want to do is.

I get a string that looks like

{m} {l} is a male name, so {f} {l} is a female name, {r} {l} must me a either/or(random) gender name

And I want it to randomly be populated from the correct keys.

so you might get

luke browne is a male name, so racheal smith is a female name, mary browne must be a either/or(random) gender name

How would I go about doing this?

the function skeleton would look something like

function names(mask, callback){}

and the last line of the code would be something like callback(replaced)

Answer 1

You can use Math.random() to get a random value between 0 and 1. From there you can use Math.ceil() or Math.floor() with multiplication to get the desired range of values.